body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #0f172a, #1e293b);
    color: white;
}

/* NAVBAR */
nav {
    background: rgba(2,6,23,0.9);
    padding: 15px;
    text-align: center;
    position: sticky;
    top: 0;
}

nav a {
    color: white;
    margin: 10px;
    text-decoration: none;
    font-size: 18px;
    transition: 0.3s;
}

nav a:hover {
    color: #38bdf8;
}

/* HEADER */
header {
    text-align: center;
    padding: 60px 20px;
    animation: fadeIn 1.5s ease;
}

/* ANIMATION */
@keyframes fadeIn {
    from {opacity: 0; transform: translateY(-20px);}
    to {opacity: 1; transform: translateY(0);}
}

/* CARDS */
.modules {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
    padding: 30px;
}

/* CARD STYLE */
.card {
    background: rgba(30,41,59,0.7);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    transition: 0.4s;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
}

.card a {
    display: block;
    padding: 50px;
    text-align: center;
    color: white;
    text-decoration: none;
    font-size: 20px;
}

/* HOVER EFFECT 🔥 */
.card:hover {
    transform: translateY(-15px) scale(1.05);
    background: linear-gradient(135deg, #3b82f6, #06b6d4);
    box-shadow: 0 15px 40px rgba(0,0,0,0.5);
}

/* FOOTER */
footer {
    text-align: center;
    padding: 20px;
    background: #020617;
    margin-top: 20px;
}